Tuyere



(No Model.)

, J. MOGLELLAND.

TUYERE.

Patented May 30, 1893.-

UNITED STATES PATENT -OFFICE.

JOSEPH MCOLELLAND, OF CHICAGO, ILLINOIS.

TUYERE.

SPEGIFIOATIONforming part of Letters Patent No. 498,565, dated May 30, 1893. Application filed August 23, 1892. Serial No. 443,853. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH MOCLELLAND,

a citizen of the United States, residing at Chi eago,county of Cook, and State of Illinois, have invented certain new and useful Improvements in'Tuyeres, of which I declare the following to be full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My present invention has relation more particularly to an improvement in that class of tuyeres designed for use in forges for delivering the blast of air into the mass of fuel. An objection met with in tuyeres of this kind, as heretofore commonly constructed, is that the upper part of the discharge end of the tuyere, being subjected to the greatest heat, is apt to speedily burn and wear away, thus rendering a new tuyere necessary, although the remaining portions of the tuyere are not materially impaired. 7

One object of my invention is to overcome this objection, and to this end my'invention consists in providing the discharge end of the tuyere witha removable uppersection, which, when worn away, can be readily replaced. With tuyeres of ordinary construction, having but a single channel for the blast of air, it is found that if the air channel be sufficiently large for the ready heating of large bars or pieces of iron it will admit too great a blast of air when a much smaller bar or piece is being heated; and so, also, with such a single air channel the blast is delivered into the fuel adjacent to a small portion of the bar or other article being heated.

A further object of my invention is to provide a tuyere by which the supply of air through the tuyere can be controlled and by which the blast of air can be more effectively distributed.

To this end my invention further consists in providing the tuyere with several air channels furnished with suitable valves, and in arranging these channels in line, so that the supply of air shall be delivered into the fuel throughout a greater length of the rod or other article to be heated.

Figure 1 is a plan view of a tuyere embodying my invention. Fig. 2 is a view in side elevation. Fig. 3 is a view in horizontal section on line 3, 3, of Fig. 2. Fig. 4 is a view in vertical section on line 4, 4, of Fig. 1. Fig. 5 is a view in vertical cross section on line 5, 5, of Fig. 3. Fig. 6 is a perspective view of the removable upper section at the discharge end of the tuyere.

A designates the main body of the tuyere. In this body is formed a series of channels, a,a,in suitable number,three of such channels being shown in the drawings. For convenience of construction the end of the tuyere to which the bellows will be connected, is made with a main chamber or channel, a the upper half of this delivery end portion being formed as a separate plate B, attached by plates 2 to the flanges a and b, projecting respectively from the tuyere body and the plate B. The channel a is shown as leading directly from the channel or chamber a while the channels a diverge therefrom, the purpose of this arrangement being to enable the channels to discharge the air throughout a greater extent of the fuel. The opposite or discharge end of the tuyere has its upper part formed as a separate plate, 0, that is conveniently attached to the body A by bolts, 3, passing through the flanges b and a.

My purpose in providing the tuyere with the removable end plate or section 0, is to enable such portion to be replaced, when Worn out or burned out, without the necessity of discarding the entire tuyere. The air channels aand a are preferably arranged in horizontal line, as shown, and preferably also the central channel a, or one constantly used, is made somewhat larger than the side channels a. The channels a are provided each with a valve or gate D, passing through a suitable slot in the top of the plate B, and by means of these valves D either or both of the air channels a may be put out of service.

From the foregoing description, it will be seen that if after long usage the end plate or section 0 is found to be worn or burned away, it can be quickly replaced by a new one. If a small bar or piece of iron is being heated the operator can, by means of the valves D, close one or both of the air channels a, whereas, if a long bar or piece of iron is in the forge, either or both of these air channels a can be opened in order to deliver the air into the fuel adjacent a greater extent of the metal.

Having thus described my invention, what I claim as new, and desire to secure by Letters removable top section 0 terminating a short 10 Patent, is distance from the end of the tuyere whereby A t'uyere comprising a body A provided said section can be removed Without disturbwith the diverging channels a and a and having the body of the tnyere, substantially as 5 ing its central portion formed of a single described.

piece and having its air inlet end provided JOSEPH MOOLELLAND. with the movable valves D for controlling Witnesses: said channels and having its air outlet end GEORGE P. FISHER, Jr.,

provided with a removable top section 0, said FRED GERLAOH. 

